It's quite difficult for me to choose between S and XS when shopping western brands but I thought this one is a coat anyway so I chose S and it fits so well! Not tight at all and I can even wear a bit thick sweater inside. I am 167cm and 53kg. I always wanna a green coat, right green and style and comfortable, that I could wear for a very long time and this is the right choise! It feels so soft...though it is a bit thin than expected but still love it!!